A Nutating Disc Fuel Meter for gasoline, diesel fuel and similar light petroleum products.1” NPT inlet and outlet. Flow rate is 4 to 20 G.P.M. and maximum pressure rating of 50 P.S.I. Registers to 1000 gallons per delivery and totalizes to 100,000 gallons. Not intended for resale of liquids. Weather resistant components. UL Listed.